Printing machine



Aug. 12, 1947. E. J. JANKE PRINT ING MACHINE Filed April 29, 1944 7 Sheets-Sheet 1 Aug. 12, 1947.

E. J. JANKE PRIN'IING MACHINE Filed Apiil 29, 1944 7 Sheets-Sheet 2 'lrnmvln INVENTOR.

BY f'DM/AIPO J. JIVAC Aug. 12, E JANKE y 2,4 25,327

PRINTING MAGHINE Filed April 29, 1944 7 Sheets-Sheet 4 INVENTOR. Eowmwo J J'mvxe Aug. 12, 1947.

E. J. JANKE 2,425,327

PRINTING MACHINE 7 Sheets-Sheef. 6

Filed April 29 1944 INVENTOR. fDWARP I Jmxe.

Aug. 12, 1947. E. J, AN E 2,425,327

PRINTING MACHINE Filed April 29, 1944 7 Sheets-Sheet 7 Patented Aug. 12, 1947 OFFICE JPBINTING MACHINE Edward J. Janke, Cleveland, Ohio, assignor to mph Corporatlon, Cleveland, Ohio, a corporatlon of Delaware Applicatlon April 29, 1944, Serlal N0. 533,276

10 Olalms.- (GI. 101-142) Addressograph-Multl Thls lnvention relates to means for teproduc- Ing material on the planographic prlnclple by the use o1 a master sheet carrying a greasy Image and the appllcatlon to the sheet of liquid repellent, to prevent adher'ence of the ink to the nonprinting regions of the sheet, and the subsequent applicatlon cf ink eifectively 120 the printlng 1mage und non-effectively to the non-prlntlng reglons. The master sheet ls readily changeable from time 1:0 time so that a few or many imprlnts from the same Image may be made as deshed.

The inventlon is especlally wel1 adapted for a printing machlne of the offset type having a drum to carry the master shee1; and equlpped with suitable clamping means to hold the sheet thereon, an oflset drum having a yieldlng blanket to coact with the master sheet, and a roller platzen coactlng wlth the offset drum.

Among the Objects of the inventlon is the provislon of readily controllable means to apply the.

2 prlnted face of the sheet without injury to the Image just printed thereon.

Other objects of the lnventlon, and features of the mechanlsm accompllshlng the same, will be apparent from the followlng detalled descriptlon of a preferred embodiment illustrated in the drawlngs.

In the drawings, Fig. 1 is a. side elevation 01 a repellent and the i'nk in proper order und to proper extent to the master sheet, am! to thls end I provide two hand levers, one ofwhich has two posltlons for controlling the presentatlon of the repellent and the ink respectively to the master sheet, and the othe of whlch has two positiong respectively for controlling the separation of the master sheet fr0m the transfer blanket and the separati0n of the transfer blanket from the platzen. It is an object oi the inventloh to lnvention; Fig. 2 is a. fragmentary elevation, looking at the slde of the machine opposita to that shown in Flg. 1; Flg. 3 ls a vertlcal .sectioh through the machlne, as indicated by the llne 3-3 im Flg. 1; Fig. 4 is a sectional plane, as indicated by the llnes ll on Flgs. 1 and 5; Fig. 5 is a vertlcal section taken in a plane parallel wlth F'lgs. 1 a.n d 2, the plane of the section belnglndicated by the lines 55 on Flgs. 3 and 4; Fig. 6 is a vertical sectlon, as lndicated by the llne 66 on-Flg. 3; Fig. 7 ls a fragmentary vertlcal sectlon, as indicated by the line 'l'l on F1g. 4;

and Figs. 8 and 9 are sectional-details, the planes of the sectl0ns belng indicated by the llneg 8-0 and 9-9 oh Flgs. Tand 3, respectlvely.

provlde such hand lever control in a simple and -f0r the ready stoppage of the master sheet drum in convenient position for the removal and replacement of a master sheet, end in accomplish- Ing this I provide a two-pedal control, one for continuous rotatiou of the machine 1or printing, the other for half rotations of the master drum, enablitlg the ready clamping Qf both the leadlng end and the trailing end of a master sheet. It is an object of the inventibn to prowlde mechanism for thls purpose including a, very efiective clutch brake 120 stop the drum in desired posltlon.

Another object of the invention is to provide sultable means for delivering the printed product a1; the front of the machine beneath the paper table over whlch the blank heet 1s fed to the machine. In accomplishing this I provide simple end effective strlpping mechanism whlch receives the prlnted copy immedlately after its printing Impression and dlverts it around the platen roller for delivery to the front of the machine. One of the objects attalned in thls mechanism is the provlsion of meang engaging the Referrlng now to the drawlngs in detall and partlcularly I;o Flgs. 1, 3 and 5, II: will be seen tha.t the pr1nting machlne o: the pr'esent inv entlon comprlses in general a. palr cf 'slde Irame 'plates I0 and II suitably spaced from each other by cross 1rame membe, such as the rods I2. Mounted. on thes.e frame plate I0 and .ll is an ink supply unlt -l4 the details of whlch are not shown, but which has an ink supply rqll I5 (Flg. 1). Any mechanism may be used to provide the roll I5 with a continuous supply 015 lnk.

The ink supply roll I5 applles in]: to an ink w appllcator roll I 6. A dlstributor roll I1 coacts with the roll I6 to insure an even dlstrlbutlori of the ink thereon. These rolls, together wlth a liquid repellent applicator roll I8, extend between a.nd are mounted in the upper portions o1 the frame plat;es I0 and II,. as will be hereinafter more fully described.

The applicator ro1ls I8 and I 0 apply liquid repellent and ink, in that order, tothe surface of a flexible planographic prii1tlng plate 20 which ls mounted on the periphery o! a plate drum 2I. This drum is rotatably m ounted in the frame plates I0 ana II immediately below the aPDlicator rolls.

The inked Image of the prlnting plate is transferred to a transfer blanket 22 mounted on an x.ifiset d1um 23 whlch is journalled In the 1'rame 3 roll 24 whlch ls lournalled in a, hell 25 Immediatzely belw the tzransler drum. The sheet ls gulded ar0und tzhe platzen roll end dlschared towa.rd tzhe samt: tg.ce 01 tzhe machlne 1mm whlch ltz was fecl.

As heretzofore mentzloned, one 0f tzhe featzures et. my lnventlon eontzemplatzes bodlly movementz o: tzhe appllcatzor rolle a.way lrom tzhe patztern roll end bodlly movementz 01 tzhe petztzern end platzen roll: away from the transfer or pflsetz roll.

The In]: appllcatzor roll I6 ls secured tzo a. sha.ftz 30, the ends 01 whlch projectz lntzo upwa.rdly Incllned slotzs 3I formed in tzhe frame platzes I0 end II, tzhe welle 013 tzhe slotzs providlng a. Journal lor tzhe sha.ftz. The posltzlon of tzhe sha.ft 30 in tzhe slot l.s contzrolled by a. po.lr 01' cam platzes 32 w hlch are secured tzo tzhe unter faces of the respectzlve l'rame platzes by stzuds 33 whlch pa.ss tzhrough vertlcallY extendlng slotzs 34 in the cum. platzes. Bach cum platze has a. cum surface 35 on whlch tzhe ends of tzhe shaft 30 are retzalned by sprlngs 38. The arrangement ls such thatz when tzhe cum plates are moved upwardl.v tzhe lnk roll IG will be moved dlagonally upward in ltzs slotz outz of sontzactz wlth tzhe prlntzlng plate.

The repellent appllca.tzor roll I8 is a. fabrlc covered roll und. ls mounted on a shaft 36, the ends of whlch are 'journalled in slots 31 formed in tzhe frame platzes I0 end II a.nd c0actz wlth cam platzes 38. tzhe movementz of whlch move tzhe repellentz appllcatzor roll lnto und .0utz of contzactz wlth prinlz- Ing platze 20. The cum platses 38 a.re mountzed 0n respectlve frame members lnthema.nner heretzofore deserlbed in connection wlth tzhe cam platzes 32.

Wheu elt her the lnk or tzhe repellentz a.pplicatzor roll moves upwa.rclly end outzwardly 0ut 01 coutzactz wlth the platze drum, tzhe lnk dlstzrlbutzor roll I1 also moves upward, tzhus preventzlng lntzerference betzween ltz end tzhe movementz of tzhe otzher rolls. As shown in 1"Igs. 1 end 2, lt; will be seen tzhatz the cum plates 35 end 38 each have beveled cum surfaces 40 whlch enga.ge tzhe ends 013 tzhe dlstrlbutor -r011 sha.ftz 39. Thls shaftz llke tzhe appllcatzor roll sh9.ftzs ls journalled in slotzs formed in the frame platzes.

The cum platzes 35 end 38 are actzuatzed by a. palr 0f ca.ms 4I und 44. These cams are sequred tzo respectzlve encls 0f a. shaft: 42 (Flg. 3) which ls journalled in Izhe frame platzes I0 end. II. Each cam engages a roller 43 carried by the cam platzes 35 end 38. The cams are constructed so tzhat when tzhe shaftz 42 ls turned ln a.- dlrectzlon clockwlse lnFlg. 1, the cam platzes together wlth the rolls I8 und I1, and tzhereafter tzhe roll I8, will be moved upwardly awa.y'from tzhe plate cylinder 2I When tzhls shaftz ls tumed in a. counter-clockwise dlrectlon tzo lower tzhe rolls, tzhe ca.ms actz flrstz t0 permlt-the sprlngs 38 tzo lower the repellentz appllcator roll I8 lnto contzactz wlth tzhe platze 20. Durlng thls movementz of tzhe ca.ms, a. concentzrlc portzlon 44 015 tzhe cum engages tzhe rollers of the cum platze 32 retzalnlng lt in itzs upper posltzlon. Thls featzure permltzs the repellentz appllcator tz0 act: to tzhoroughly apply repellentz tzo the prlntzlng platze before any lnk-ls applied tzheretzo. Furtzher movementz 0f tzhe cum shaftz in a countzer-clockwlse dlrectlon lowers tzhe ink applicatzor roll I8 anti ltzs cllstzributor roll I1 wltzhout dlsturblng tzhe repellentz appllcatzor roll I8.

The platze drum 2I whlch ls bestz shown in Flgs.

3 und 5, comprises a. cyllnder havlng a. gap 50 end sultzable means ln tzhe gap for clamping end. tzenslonlng a. platze anch0red a.tz ltzs otzher end tzo 1 the cyllnder.

4 Any sultzable means may be employed lor 1mchorlng und tensloning tzhe plate. The partlcular mea.ns shown ls lntzended for a. platze having a. r0w 01 holes atz ea.ch end. As shown a. recess II Is formed in the perlphery 015 tzhe cyllnder 2I und extends axially a.l0ng lt, und in tzhls recess are a serles of hooks 52, Flg. 5. These hooks u-e adaptzed 'tzo engage openlngs 53 l'ormed in one end 0f tzhe prlntzing platze 20. Atz ilzs otzher end. tzhe platze shown has a second series of slotztzed openlngs 54 which are engaged by hook-llke formatzlons 55 0n tenstonlng member 55. Thls tensionlng member is pivotally m0unted 0n a shaftz 51 wlthln the gap 50 0f lzhe drum und ls normally swung in a. platze-tensloning dlrectzlon by a. spring 58 whlch is lntzerposed betzween tzhe member und a. rod 58 carried by tzhe end Walls of tzhe drum.

T0 retzaln the platze 0n the hooks 55, I plvotzally mountz a comb 0n tzhe tzenslonlng member 58, es atz 8I. The tines 82 of this comb projectz betzween tzhe hooks 55 und by tzhe actzion of a. sprlng 83 tzhey resllientzly reta.in tzhe platze in contza.ct wlth tzhe face of the tensionlng member und preventz lts lnadvertzentz movementz from tzhe attach- Ing hooks 55.

A fuller descrlptzion anti showlng of the detatls 0f tzhe partzlcular clamp herein lllustzrated appears in tzhe pendlng applicatzlon of Messrs. William R. Allen and Charles H. Sand, N0. 448,912, llled June 29, 1942, asslgned t0 my assignee Addresso-- graph-Multigraph Corporatzlon.

The platze drum 2I is bodily movable in a. Illrection away from tzhe transfer or otfsetz drum 23. As shown in Fig'. 3, tzhe drum 2I ls rotatably mountzed on a shaftz 85 having eccentzrlc end portlons 68 end 61 which projectz lntzo bushings carrlea by tzhe frame platzes I0 and II respectively. Thus, es tzhe shaft; is turned, tzhe drum ls moved. bodlly. The shaft; 55 is latched in itzs printlng posltzlon by a plvoted latzch 10 carried by a. sleeve 1I whlch ls pinned to tzhe eccentric portzlon 01 of tzhe shaftz. A spring 12 tzends t0 retzain thls latzch ln a. notzch 18 of a latch plate 13. Thls platze ls adjustably mounted on tzhe frame platze II and is secured in position by a stzud 14 which passes tzhrough a slotztzed opening in tzhe latch plate und threadlngly engages tzhe frameplate.

The Patch 10 is released anal tzhe shaft ls turned by a. knob or control member 15. Thls knob is rotzatzably mounted on tzhe shaft: portion 81 anti. as lt ls initzlally turned in a clockwise directzion a cum surface 16 tzhe'reof engages tzhe latzch 10 anti moves ttz outz of engagement wlth tzhe cam platze. Thereaftzer tzhe knob engages a pin 80 carried an an arm of the latch sleeve and tzurns the shaftz. The pin 80 is engatged by tzhe walls of an openlng 83 which is conslderably larger tzhan the dlameter of the pin. Due tzo tzhis lost m0tzion connectzlon the turntng of tzhe knob in a. latzching dlrectzlon firstz moves tzhe cam pastz tzhe latch 10 permittlng ltzs spring 12 to force lt: agalnstz tzhe latch platze; Furtzher movement: of the knob turns the shattz end latzch untzll tzhe latter engages tzhe notzch 18 in tzhe latzch platze.

Alignment of tzhe drum 2I axlally wlth tzhe lngs carrled by respecttve 1rame platzes I and II. 'I'his cylinder has an axlally extendtng gap !I aIz one end o1 whlch is a bar 92 provided with a sattes 01 hooks 93. One end. 01 tzhe'transfer blanketz 1s provided wlth slotted openihgs 94 for engagement witzh these hooks. The 0ther end o! the blanketz is provlded wltzh a. similar sei: 01 slotztzed openlngs whlch are engaged by hooks 85 on tzhe tensiontng bar 96. This bar ls plvotzally mountzed on a rod 91 carrl'ed by tzhe drum and 1s tensioned by a pair of screws 98 Which tzhreadlngly extend through tzhe bar. and coactz with a surface 99 cf tzhe drum gap.

The platzen 24 1s a relatztvely small roll and is rotzatzably mountzed an a shattz IM, tzhe ends of whlch are mountzed in respectztve levers III! whlch tzogether with tzhe shaftz Iorm tzhe platzen roll ball. These levers are pivoted lntzennedtatze 'Izheir ends as a.tz III! Izo tzhe inner Iace 01 respectlve frame platzes and atz th elr unter ends are bentz inwardly as atz I 03. These ihwardly bentz ends are each provide'd with a square opening tzo recelve tzhe squared portion I IM of a respectlve rod II)! carried by respectzive bars III6 formtng pa.xtz ot the base 21 tzo which tzhe machtne ls secured and projectln forwardly therefrom. A coll spring III! surroundtng tzhe rbd betzween the portlon I 04 o1 tzhe lever and a nutz carried by tzhe threaded upper end of tzhe rod serves to move tzhe platen roll 8S- sembly reslllently toward tzhe oflset roll.

Axial vibratlon of tzhe platzen roll, ls prevented by a yoke 56 (Figs. 2 and 4) This yoke ls plVotally mountzed as atz & I tzo tzhe exterior et. tzhe frame plate II, and engages an annular gi'00Vt3 48 on tzhe plateshaftz III), which passes freely tzhrough an enlarged openlng 49 In the'frameplate II. This arrangementz permits tzhe platzen roll shaftz to be lndep'endentzly mouhted atz its opboslte ends, as just; descrlbed.

The rods I05 which supportz the platzen roll spring assembly are reslltentzly maintzalned in posltzion by second coll sprlngs III! which are interposed betzween tzhelbars IOIi and shoulders I 09 of tzhe respectzive rods and are sttfler tzhan the sprlngs I 01. These springs I08 actz to retain tzhe rods in thetr uppermostz positlons. An adjustztng nutz III! carrled by a tzhreaded p0rtzion of each rod extending beneatzh tzhe respectlve bar Ill6 llmits tzhe upward movementz ot' tzhe rod and by varying tzhe compresslon of tzhe spring I II! controls tzhe pressure of tzhe platzen roll. 4

After a new platze has been applted t:o tzhe platze drum 20, itz is destrable thatlt be thoroughly coated witzh liquid repellentz and then tzhe ink applled, before the plate is broughtz lntzo contzact wltzh tzhe transfer blanketz. One cf tzhe featzures of this inventzlon 1s tzhe provlsion o1 an efictentz manually operable contzrol Izo enablethe above sequence of operation. A furtzher feature of tzhe present lnvention 1s tzhe provislon of a simple manually operable mechanism tzo contzrol tzhe separatton-betzween tzhe plate drum 2I, tzhe platzen roller 24, and tzhe ofisetz drum 23 In such manner as tzo enable the buildtng up of an inkea Image on tzhe tzransfer drum witzhoutz danger of offsetztzing such Image on tzhe platzen roller. These operations are contzrolled by apatr of levers III and II2, whlch, in tzhe form shown, are conven lentzly positioned ati tzhe rightz band .slde of tzhe machlne.

The applicatzion cf liquid repellentz and lnk to tzhe printing plate ls contzrolled by tzhe lever III.

This lever and ltzs assoeliztzed contxol mechanism is best shown in Fies. 2, 3, and 4, As tzhere shown,

tzhe lever III ls secured to one arm II 4 o: a hell 'crank wh lch is I lvotzally mounted on a shaftz IIG Journalled in tzhe frame plates III and II. The other arm II5 cf the hell erank ts connected by a. llnk II! tzo one end of a, lever II8. Thls lever ls plvotzed tntzermedtate its ends as ab II9 to tzhe fra.me plate II. The otzher end o1 Izhls lever is pl votzally conmacted Izo a rack bar I'20 tzhe 'teetzh I2I 01 whtch engage a plnlon I22. .Thls plnl0n ls secured tzo tzhe cam shatt; 42 hetetzofore descrlbed.

The arrangemexttz age above-des zrtbed ls such that when the lever ls in a. vertical posltzton botn tzhe repellentz applicator roller I8 and tzhe 1nk rollers IG and I'I are In tzhetr uppermost or ldle posltions. When tzhe lever III is moved to tzhe dotted-line posttlon (Flg. 2) tzhe cams II, 44 have been rotatzed sufllclently tzopermlt tzhe repellentroll I8 tzo lower lntzo contact witzh the printzlng plate, whlle tzhe inktng roll is still outz of contzactz tzherewith. The drum 2I ts rotatzed whlle tzhe lever ls in tzhls positlon and.the platze is thus coatzed w1th repellent.

The lever III ls then swung to tzhe full llne position shown In Fig. 2. When moved tzo thls position tzhe ink roll I6 moves intzo contzactz Witzh tzhe prlntzlng platze and the prlnttng drum ls rotzated to cause the lnk to bulld upon tzhe Image portzlons of tzhe prtntzing platze '20. II; ts, ofcourse, assumed tzhat tzhe printzlng drum '2l has been previously :g:arated from tzhe transfer drum 23 durlng thi's After the Image has been bulltz upon the prtntzing platze, tzhe plate drum ls moved lntzo contact;

cf tz hls hell crank carrtes witzh tzhe trans fer drum. Thls ls controlled by tzhe lever H2, which when tzhe drums are separated ls in lts verttcal posltlon as illustrated In full llnes In Fig. 2. The lever I I2 is mountzed on one arm I25 o! a hell crank which is secured to tzhe shaftz H6 already mentzioned. The otzher arm I26 a. pin I21 whlch engages tzhe walls o1 a. slotz I28 in a llnk I29 andwhich is operably connected tzo the link -by a spring I30.

As the lever II2 is moved from lts vertzical position. shown in Flg. 2; tb tzhe dotted line posltzlon tzhe spring I3II serves as a. connecting member betzween tzhe hell crank and llnk so es to move tzhe link upwardly. The upper end'of the link I29 is plvotally connected -tzo a dlsc I3l which ls seoured to tzhe knob15 of tzhe prlntzlng roll eccentzrlc shaft portion 61 heretzofore described. The arrangementz of tzhls mechanism 1s such thatz tzhe movement' of tzhe lever II2 moves t.he eccentric untll theplate drum 2I moves into contzactz witzh the transfer drum 23. The tnk and repellentz applicator rolls, belng drawn downward by tzhe spring 36, follow the printzing drum in ltzs downward movemen-t.

After the drums have rotatecl sufllciently to cause tzhe bullding up of tzhe inked Image on the transfer drum; tzhe lever 'II2 ls moved to vralse the platzen roll, as herelnaftzer.described, lnto cooperatton witzh tzhe transfer drum, and. tzhe machine ls then ready for prlntlng. In ltzs COODGI'8? tive positlon, tzhe platzen roll is spaced from the transfer blanketz a distance slightly less tzhan tzhe tzhlckness o1 tzhe sheetz to be prtnted, so that no ofl'setztlng 021 the platzen occurs in tzhe absence of a sheetz betzween tzhem, but tzhey are able tzo impress tzhe image on the sheetz when presented. The ralsing of tzhe platzen roll ls accomplished by movtng tzhe lever I I2 to a position similar to tzhat in whlch tzhe lever III is shown in Flg. 2. "When the lever II2 ls in it;s Vertlcal posttzlon shown in Fix. 2, a tzogsle mechanism aboutz to Ioe described of tzhe lever III and tzhe ltnk- 3 pair of pins I'II5 actzs on tzhe platzen roll supporttng arms Itll tzo hold tzhe platzen outz o! contzactz wlth tzhe transfer drum. The movementz cf the lever tzo the dotzted ltne posltzlon has no efl'ectz on tzhls tzoggla mechantsm, butz itzs movementz to ltzs fartzhestz posttzlon breeks tzhe togzle and permlts the sprlngs III! tzo raise the platen intzo contzactz wlth tzhe tzransfer drum.

The tzoggle mechanism above mentloned ls bestz lllustzratzed In Fies. 4 and. 5. As there shown, a patr 01 platzes I35 are Journalled on tzhe shaftz II6 substantztally beneath the respectlve platzensupportlng arms IIII. These platzes each carry a pln IIII which enzages in tzhe upper ends o! slotzs in respectlve links I3'I which are plvotzally counected as atz I38 tzo the arms IIII. When in the posltion shown in Fig. 5, tzhe pins I36 lle in a llne drawn betzween the plvots I38 and tzhe axls 01 tzhe shaftz I IG, or slightly atz tzhe rlghtz tzhemof.

The tzoggle mechanism ls actzuated by pins IN carrled by respective levers III which are plnned to tzhe shaft II6. As the lever II2 ls moved trom ltzs vertical position tzo tzhe positzlon indlcatzed by tzhe dotted lines in Fig. 2, tzhe pins 140 move ldly in enlarged openings I42 in tzhe tzoggle platzes ISS. However, as tzhe lever I I2 is moved tzo lts leih band positzin tzhe pins I4Il en8ase tzhe walls of the openings I42 and swtng tzhe toggle pins I3ti tzo tzhe leftz thus breaking tzhe toggle and permltzting the springs III'I tzo move the platen roller 1nto cantzactz with tzhe transfer drum.

The movementz o1 tzhe lever II2 to raise tzhe platzen roll has no effectz on tzhe plate drum 2I. As heretzofore mentzioned, the latzch III retzalns tzhe plate drum in ttzs actlve posttzlon. Due tzo thls latching, tzhe movement cf tzhe lever I I2 to tzhe lettz fr0m its dotzted-line posltzlon does notz move tzhe link I29 butz causes tzhe stretzching of tzhe spring I30 as the pln 121 moves tzo tzhe upper regten of tzhe slotz I28 (Fig. 2). In tzhis movementz tzhe ptn is drawn lnto an Offset: portzlon I32 015 tzhe sto and retalned tzhere by tzhe spring I3Ii, and tzhis retains the lever I I2 in it's left band er forward position untzil itz is again swung tzoward tzhe rightz (Fig. 2).

An adjusoment is provlded between tzhe knob I5 and the disc I3I which is actzuated. by the lever II2. As shown in Fig. 2, tzhe disc ls adjustzably secured tzo tzhe knob by a boltz I33 whlchpasses through an arcuatze s10tz in the disc. This permttzs tzhe adjustzment of tzhe platen as heretzofore described. wltzhoutz altertng tzhe operation of the coutzrol mechanism, the adjustment of tzhe 1atzch platze 13 being compensated for by adlustmentz of tzhe disc I3I.

The movementz of tzhe lever I II ls limltzed in ltzs extreme positztons by a pair of pins I23 (Fig. 2) carried by tzhe frame platze II and projecting intzo the path of tzhe arm II4 of tzhe hell crank carrying such lever. The lever is retzalned in any' 011 itzs selected positions by a sprlng-pressed plunger I24 (Flg. 4) carrled by tzhe hell crank IM and engaging a, suitable indentzlatlon I'I5 in tzhe frame platze II.

The movementz of tzhe lever II2 ls llmltzed by a (Figs. 4 and 5) which are secured. tzo the frame platze I2 and are engaged by one 013 the tzoggle plate arms I35 heretzofore descrlbed. If deslred, this lever may be retained in any cf ltzs selectzed poslttons by a slmllar arrangementz tzo thatz descrlbed in connectzion wltzh tzl e lever III. In such lnstzance tzhe plunger mechantsm would be carried by one of tzhe tzoggle platze arms I35.

As heretzofore mentzloned sheetzs to be prlnted are fed tzo the machlne irom tzhe frontz, namely,

o! Flg. 1, or tzhe 1ettz band side o! I"lgs. 2 and 5, and are discharged tzoward the slde trom which tzhey are fed. The sheetzs are fed. one atz a tzime, across a Ieed tzable I" carrted by a sultzable cross frame mem-ber I", intzo tzhe bttze of tzhe transfer drum and platzen roller tzo recetve the Impression trom the trans- I!er drum, and are returned, prlnted, beneath such table, as aboutz tzo be descrlbed.

Immedlatelv aftzer tzhe sheetz to be prlntzed passes betzween tzhe b1tze ot tzhe drum 21' and the platzen roller 24, itz ls stzrll 1)d I1'om tzhe transter blanketz and directzecl downwardly around the tzhe rtghtz band stde platzen roller tzo the bttze oi tzhe platzen roller und shown in Flgs. 3, 4 and 5, and comprises an ejectzor bar I5II carried by tzhe transfer drum 23, and strlpplng flngers curvlng aboutz tzhe platzen, to directz tzhe sheetz downwarclly and forwardly.

The ejector bar 150 lies in tzhe gap 9I 01 tzhe oflsetz drum and ts carrled by a palr of arxns I5I which are ptvotzed as atz |52 tzo the ends 01' the drum. Spr1ngs I53 lntzerconnecoed betzween tzhls bar and tzhe drum serve to malntzatn tzhe ejector bar normally wltzhin tzhe cyltndrlcal conflnes 015 tzhe drum 23. However, lmmedlately alter the sheet has passed betzween the drum and the platzen, a roller I5l on one of tzhe arms I5I engages a stattonary cam formatlon I49 carrled by tzhe frame platze III and causes tzhe bar I5ll to force tzhe sheetz away from tzhe di-um tzowara the setz of strtpp@r flngers I-55.

The stzripper flngers I55 completze tzhe stzrlpplng of tzhe sheet from tzhe tzransfer drum 23 and gulde ltz around the platzen roller. These strlpper fih gers I*55 are carrled by a bail I58 pivotzally secured tzo the frame plates I0 and. II as atz IST.

These flngers are spaced Irom and conform tzo tzhe curvature.of tzhe platzen roller. Springs I58 lnterposed between tzhe ends of the bail l56 and the respectzlve traute plates retzatn tzhe batl in posltzion agalnstz eccentzrlc st0ps I5! on the frame platzes. 'I'his mountzing permtts tzhe bail and stzrlpper fingters tzo be swung away from the platzen whenever deslred, the bat] being provlded witzh a handle Ifitl for tzhls purpose. This enables tzhe ready removal for tnstzance of any tzorn sheetz or any sheetz jammecl from tzhe feeding cf more than one sheetz atz a tzime.

The arrangementz descrlbed is such tzhatz the upper ends cf tzhe finers are as close tzo the transfer drum as ls practimble. Therefore, the ejectzor bar I5Il ls in tzhe natura of a comb, only tzhe t.lnes III! of which projectz outz of the cylindrtcal conflnes of the drum and tzhen only when the ejectzor ts actzuated by tzhe cam I49.

The strlpper flngers guide the sheetz around tzhe platzen lnto tzhe bite of tzhe platzen and a dlscharge roller I62. This roller is preferably made of a resillent material such as a rubber composltzion and ls journalled on a rod IS3 supportzed. at ltzs ends in arms Ili4. These arms are plvoted a.s atz IG5 tzo the respectzive: frame platzes and are engaged by sprlngs I6Ii which actz tzo retza.ln tzhe ejectzor roller reslllentzly in contzactz wltzh the platzen roller. z

The ejectzor roller I62 is so arranged as tzo avotd injury tzo tzhe freshly prlntzed surface o! the sheet belng dellvered. As shown bestz in Fix. 4, tzhe ejector roll I62 ls grooved as atz ISS so as tzo present; a. serles 01 spaced narrow ribs I6'I to tzhe freshly printzecl sheetz, and tzhe ejectzor rolls springs to cause lt to contact llghtly wlth the platzen rollen The platzen 24 a.nd e:lector toller I02 dlscharge the sheet through a passage formed bymmer und lower sets o1 curved tlnes I 10 und I1I (Fix. 5). The lower set of tines 1s secured to the edge o1 a recelvlng tray I'l2 supported by the frame 01 the machine. The inner ends 01 these tlnes project into the gro6ves I68 o1 the dlscharge roller I62 thus lnsurlng the stripplng o1 the sheet from such roller. The upper set 01' tlnes is ca.rried by the cross bar I1I of a ball the arms I'll of whlch a.re secured to the receiving tray I12. The sheet recelvlng tray ls removably secured to the machlne in any suitable manner, so that lt und the tlnes I10 I1I ma.y rbe removed a.s a unlt frm the machlne.

The p'rintlng mechanlsm just descrtbed ls power operated. As shown in Flg. 1, the machlne ls mounted on or secured to a stand I00, whlch ca.rries a motor I8I. The motor ls connected by a drivlng belt I8.2 wlth a. sha.ft I83 (Flgs. 3 und 6) by a. clutch mechanim 200 herelnafter to be descrlbed In detail. I34 meshlng wlth a gear I05 on a. countershatt I-01 ls joumalled in the frame plates I0 end II. Adjacent the fra.me plate I0, a. pinlon I86js secured to this countershaft. This plnlon meshes with a. gear I08 secured to transfer roll drum whlch in turn drlvingly engages gears I89 und I 90 carried by the printlng druxn and platen roller respectlvely.

The ink and repellent applimtor rolls I6, I1

and I8 as well aS the discharge roller l61 are all preferably driven by frictlonal contect with their respective coacting rolls or drums. Sultable hand wheels one, 260, at the left band slde of the machine, on the shaft I03, end another, '26I, at the rlght hand slde bf the machlne on the shaft I81, permlt manual operatlon cf the mechanism when deslred.

The clutch mechanism 200 ls best shown in Fix. 3 and 15 mounted between the tr'ame plate I0 a.nd a frame bracket 20I secured thereto. The clutch shaft I83 ls journalled in such bracket end frame platze. A fianged pulley 202 1s rotatably mounted on thls shaft adlacent the pinion I04. Thispulley is contlnuously driven by the belt I82 heretofore des0ribed. The flange 203 of thls pulley is provided wlth a plurality of interna'l axlally extendlng grooves 204. These grooves recelve lugs 205 on a frictlon clutch plate 206, whlch ls disposed between a pair cf discs 201 end 208. These discs are normally held apart by sprlngs (which may be s imilar to the springs 209 in the brake hereinafter described) end are drivlngly connected by pins 2I0. The disc 201 has an axially extendlng hub 2II which is drlvlngly secured to the clutch shaft I83 .by a pln 2I2. The

clutch discs when drawn toether grip the clutch plate 206 end thereby form a drlving connectlon between the clutch pulley 202 and the shaft I03. The clutch discs are operated by a collar 2I3 whlch is slidably mounted on the shaft I83. As the collar ls moved toward the clutch lt engages a plura-1lty of fingers 2 I4. These fingers are pivoted to a collar carried by the hub 2I I o! the dlsc 201 end as they are swung by the collar 2I3 their inner ends 215 engage the disc 208 thereby drawing the plates 201 am! 208 together in driving relatlon wlth the frlction clutch plate 206.

The shaft I03 is also provided with a brake 2I8 whlch serves to. bring the shaft, end therefore the entlre prlnting mechanism, to a rapid stop.

This shft carries a. plnlon The brate 1a slmllax to the cluteh 'mechanlsm heretotore descrlbed end the eorrespondlng pli.l'ts have been glven correspondlng reference numv bers. In the brake mechanism the lll8s 206 01 the 6 cluteh plate a.re engaged by the Walls o1 notches 2I0 01 a statlonary plate 220. This platte 18 mounted an posts or.bosses 22I carrled by the bracket 20I. .The clutch dlscs 01' the bmke a.re operated by movement of the collar 2I3 toward 10 the 1eft (Flg. 3) in the same manner as betetefore described in connectlon wlth the clutch.

It will be notea tha.t the collar 2I3 ls so arranged that a. relatlvely small movement 1mm ts clutch engaiflg Psltlon (shown in Flg. 3) will cause the engagement of the brake mechanism, there being substantlally no neutral positlon 01 thls clutch-and-brake-operatlng collar.

The clutch mechanlsmls controlled by toot pedals 230 und 23I (Flg. 1). The 101 ner cougo trols the operatlon o! the clutch durlng normal operatlon of the machlne am], the latter serves a purpose herelnafter to be more fully descrlbed. These pedals are plvotally mounted 1'or independent movement on a. rod 222 carrled by a. g; bracket 223 secured to the lower end 01 the stand I00. The forward or right hand end 01 the pedals are normally held in a raisedpositlon by suitable springs, one of whlch ls indicated at 224. The pedal 230 ls connected by a link 226 to a lever 226 which in turn ls connected by another link 221 wlth a. lever 220 (F188. 1, 6 and 7). -Thls lever ls secured to a rock-shaft 229 whlch ls Journalled in the frame plates I0 end II. secured to is connected by a link 233 wlth one arm 234 of a. hell crank 2I6 (Flgs. 3, 6 ahd 7). Thls hell crank ls plvotally mounted on a rod 235 carrled by the bracket I of the c1utch mechanlsm. The other arm 236 -of the hell crank carrles a pin 231 whlch engages a. perlpheral groov 230 tormed operatlng the clutch to connect the motor IOI drivlngly with the printlng mechanism. So long as the pedal 230 is retalned in a'depressed positlon the prlnting mechanism will contlnue to rotate.

It is deslrable that the machlne stop in a predetermlned positlon when the clutch pedal 230 is released. T0 thls end. there is provlded a la.tch mechanlsm to retaln the clutch-operatlng hell crank 2 I6 in clutch-operatlng position -until a.

k predetermlned point in th cycle o! operation cf the printing mechanism. As shown in Figs. 6 and 7, thls latch mechanism comprlses a. latch member 240 plvoted as at 24I to the bracket 20I, end. prged toward the arm 234 of the hell crank 2I6 byasprlng2l1.

The arrangement of the mechanism just descrlbed is such that when the hell crank ls actaated by the depression of the pedal 230, the latch will be moved into the posltion shown in Flg. 6.

Inthis position the latch overlies th hell crank and retains it in the po'sltlon shown in Flg. 3, even thoueh the pedal 230 be released by the operator, untll the latch 240 1s automatlcally released by the printing mechanlsm, as about to be described.

As shown in Flgs. 3 and 6, the transfer roll shaft 90 extends outwarclly beyond the frame the outer end of thls shatt ls a. lever 232 whlch in the clutch collar 2I3. A spring 239 normally latch and swing it out of engagement with the hell crank 215, as shown in Fig. 7; whereupon the spring 239 swings the hell crank in a; counter-clockwise direction (Fig. 3) moving the 001- lar 2I3 from the clutch-engaging position to the brake-engaging position.

'I'he cam 242 is so arranged that it will stop the printing drum either in the position shown in Fig. 5, where the plate retaining hookg 52 are accessible at the front of the machine, or in the diametrically opposite position, in which the platze clamp 56, etc., is accessible at the front: 01 the machine.

Assuming the machine be stopped in the position diametrica.lly opposite to that shown in Flg. 5, then the plate clamp mechanism 56, etc., may be operated to release the plate 20. Theu if the mechanism is rotated half a, revolution, into the position of Fig. 5, the platze retaining hooks 52 a.re accessible to permit removal of the printing plate and the substitution of a new plate therefor. Foilowing the positioning of a new plate 20 on the hooks 52, the rotatiom of the drum 20 10r one half a, revolution will wrap the plate around the drum and again bring the plate clamp 55, etc., into position to enable the operator to secure the plate thereto, thus completing the attachment of the new plate to the drum.

'I'he rotation o1 the printing mechanism one half a revolution, for the purposes above described, is accomplished by the depression o! the peda.l 231 by the operator. The mechanism associated with this pedal is such that for each depression of the pedal the printing drum will rota.te one half a revolution and then come to a stop regardless of how long the operator retains this pedal depressed, and further rotation will requlre the release of the pedal. This errangement assures the safety of the operator's person during the changing o1 printing plates, and is especially desirable where the runs are short and the plates changed frequently.

The pedal 23I and its associated mechanism is best shown in Figs. 1, 6, 7 and 8. As shown in Fig. 1, this pedal is connected by a link 245 with a. lever 246 which in turn is connected by a. link 241 with a platze 248. This platze is pivotally mounted on a stud 249 carried by the frame plate I0. Rotatably mounted on' this stud, between the plate 248 and the frame I0, is a compound ratchet and Star wheel member 250, 25! (Figs. '7 and 8). When the pedal 23I is depressed by the operator a piri 252 of a. pawl 253 carried by the plate 248 advan'ces the ratchet 250 a distance of one tooth and this advances the star wheel 251 a. distance 01 one tooth. As the Star wheel tooth 254 is progressed it engages a roller 255 ca.rriea by lever 232 heretofore described. This rocks the lever downward (Fig. 7) causing it to depress the arm 234 of the clutch-operating hell crank 2 I5, energizing the clutch, anti this causes the latch 240 to retain the lever in its clutch-actuating position.

It; will be noted that the ratchet and star wheel member is so arranged that normally the roller 255 lies between two adjacent teeth 254 of the star wheel. As the star wheel 1 advanced a distance 01 one tooth for each actuation of the pedal 23I, it; is obvious that: as such pedal is depressed a Star wheel tooth depresses the lever 232 and immediately moves out of reach of the roller 255 which then, so far a.s the Star wheel is concemed,

is free to return to itsnormal position, as shown in Fis. 7. Therefore the latch mechan'ism 240 will be released by the cam 242 9s soon as the printing drum has turned a, half a, revolution, whereupon the spring 239 will cause the hell crank 2l5 to swing in a counter-clockwise direction (Fl. 3) dlsenga'ging the clutch and connecting the brake mechanism with the operating Or clutch shaft I 03.

It; will be seen that my machine Provides, in a. most nonvenie'nt manner, for the'various controls desired in a.rapidly operatingplanographic printing machine. One band lever by its two positions controls the application ofthe materlals to the image on the plate and the other band lever by its two positions enables the ready transfer 01 the image to the ofiset blnket anti then controls the printi'ng impresslon. One 01 two pedals a.nd the mechanism operated thereby enable the continuous rotation of the drum to effect printing es deslred, while the operation o! the other pedal enableg the partial rotation o1! the plate carrying drum to bring it to a stop in position where the plates may be quickly detached and a new platze attachecl to the drum. This enables the master sheet to be chan8ed with the minimum loss of time and is especially deslrable where the runs are short. These teatures, und the provision of the delivery mechanism, acting to return the sheet t;o a stacking position beneath the feed table, result in the entire operation being readily controlled by an Operator sitting at the front of the machine.

Reference is made to my divisional application N0. 615,213, filed September 8, 1945, for claims relating to a. printing drum wlth drive anti nontrol mechanism for stopping the drum in selecteu positions es shown herein und to my divisiona.l application N0. 616,493, filed September 15, 1945, for claims relating to a sheet rotary prlnting structure with associated sheet delivery structure herein shown.

Iclaim:

1. In an ofl'set; printing machine of the planegraphic type, the combination of a plate cylinder, an ofl'set cylinder, a platen, means for applying repellent to a, plate 0n the plate cylinder, means for applying ink to such platt-3, two hand levers euch having two positions anti both located so that they may be actuated by the operator without changing bis position, mechanism connecting one band lever with the repellent; applicator and the ink applicator and operative to apply the repellent by movement of that band lever into one nosition and ink by movement of the same band lever into another position and mechanism operatea by the ot;her lever to put the plate cylinder into coaction with the offset cylinder in one position of that lever, and to put the plateh into coaction with the oflset: cylinder in the other active positi'on of that lever.

2. In a planographic offset; printing machine, the combination of a. plate cylinder, an oliset cylinder, a platzen roller, an ink applying roller, a repellent applying roller, and two band levers both located so that they may be actuated by the operator without changing bis position, mechanism connecting one of the band levers wlth the ink and reppellent applicators, mechanism counecting the other band lever with the platze cylinder anal platzen roller. the normal position of seid levers mainta ining the two applicator rollers out of contact with the plate and the platte cylinder and platen both separated from the offset cylinder, each of said members having two platze cylinder lntzo oactzton with tzhe oilsetz blanketz A and the movement tzo the second position brings tzhe platen intzo coaction witzh the oflsetz blanketz witzhoutz disturbing tzhe coactzton betzween tzhe platze and blanketz.

3. In a planographic printzing machine, tzhe combinatzion of a. platze cylinder, an oflsetz cylinder, a platzen roller, an ink applying roller a repellentz applying roller, a shaftz, mechanism operatzed tzhereby to contzrol tzhe presentation of tzhe platzen roller tzo the offsetz cylinder, a band lever on said shaft adaptzed tzo Operatze tzhe same, mechanism controlled by said band lever for changtng tzhe presentatzion of tzhe plate cyltnder tzo tzhe ofl'set cylinder a band lever loose on said shaft, mechanism contzrolled tzhereby for changing the presentatzion of tzhe repellentz applying roller and tzhe ink applying roller tzo tzhe platze on tzh platze cyl-" ind'er.

4. In a planographic printzing machine, the combinatzion of a platze cylinder, an offset cylinder, a platen roller, an ink applying roller, a repellentz applying roller, a spring tending tzo apply tzhe platen roller to tzhe ofiset cylinder, mechanism tzo retain the platzen roller out 01 such coactzion, a hand lever contzrolling such mechanism, mechanism contzrollea by said band lever tot chan'ging tzhe presentzatzion of tzhe Platze cylinder tzo tzhe offset cylinder, a second band lever located alongside of tzhe firstz hand lever so tzhatz eitzher may be actzuatzed by tzhe operatzor witzhout changing bis Position, mechainsm contzrolled by said second band lever for changing tzhe presentzatzion of tzhe repellentz applying roller and tzhe ink-applying roller to tzhe platze on the platze cylinder and means for estzablishing an intermediatze dwell in tzhe movementz of each of said hand levers, whereby one lever may contzml successively tzhe coactzion of tzhe platze tzo tzhe oifsetz blanketz and tzhen the platzen tzo the ofl'setz blanket and tzhe otzher lever may control tzhe applicatzion of tzhe repellentz tzo tzhe platze and tzhen tzhe ink to tzhe platze.

5. In a printzing machine, tzhe combination witzh a platze cylinder, an offsetz cylinder and a platzen, of a repellentz roll and an ink roll each adapted tzo ooactz witzh a platze on tzhe platze eylinder, a rotzary cam mechanism coactzing witzh means on said rolls and adapted by movementz in on directzion tzo move the ink roll and the repellentz roll out of contact with tzhe platze and by reverse movement to restzore tzhe repellentz roll intzo conta.ctz witzh tzhe platze and tzhereaftzer restzore tzhe ink roll intzo contzact with the platze witzhoutz removing the repellent roll therefrom, a pinion rotzatzable witzh the cam mechanism, a reciprocable rack engaging the pinion and adaptzed tzo drive tzhe same, mechanism adapted tzo move tzhe plate cylinder intzo coactzion with tzhe oflsetz cylinder, said last-named mechanism including two members connected by a loose play connectzion and a spring attached atz its opposite end tzo said tzwo members respectively, and a pair of manually actzuatzable devices botzh of which are posltioned for actuatzion by tzhe operator in one position, one

01' said rack and the other 02 which devices may operatze tzhe mechanism having tzhe loose play connectzion whereby tzhe platzen may b broughtz intzo engagementz' with the ofl'setz cylinder witzhoutz distzurbing the relation 01 tzhe platze (Minder to the 6. In a printzing machine, tzhe eombination of a plate cylinder, an oflsetzcylinder, a platzen, a, lever, mechanism operated tzhereby tz move tzhe platze cyltnder intzo coactzion witzh the oflsetz cylinder said mechanism including tzwo members connected by a loose-play co'nnectzion and a spring connected to said members and streng enough so thatz one ofthe members may operatze tzhe otzher tzhrough tzhe intermediacy of tzhe spring, said lever having provision foran additional movementz, and

mechanism actzuated by such additional movementz tzo bring tzhe platen intzo engagementz witzh the ofi'setz blanketz while tzhe loose-play connectzion is merely constzraining tzhe spring.

7. In a prtnting machine, the combinatton of a platze cylinder. an oflsetz cylinder, a platzen. a latzch for holding tzhe platze cylinder in cooperatzion witzh tzhe oflsetz-cylinder. an actzuatzing lever, mechanism operated tzhereby to release:tzhe latzch and move tzhe platze cylinder, said mechanism including two members connectzed inseries by a loose-play connectzton and by a spring connectzed tzo botzh members, said lever havlng provislon tot an additional movementz, and means actzuated by said additional movementz tzo bring th'e platzen into engagementz with the oifsetz blanketz while tzhe loose play connectzion is stzressing tzhe spring.

8. In an Offset printzing machine, tzhe comblnation of a platze cylinder, an oifsetz blanketz cylinder and the platzen rollen a hand lever, a link cohnectzing tzhe same witzh an eccentzric for positzioning the platze cylinder, said link having a slotz occupied by a pin carried by tzhe lever, tzhe pin and link being connectzed by a spring stzrong enough to move tzhe link and turn tzhe eccentzric, said lever having a furtzher position, mechanism connectzing itz witzh tzhe platzen, whereby tzhe lever moving from itzs flrstz actzive position to it:ssecond active position will cause coactzion between tzhe platzen and offsetz drum and in such movementz will move tzhe pin along tzhe slotz in the link mentioned, said slotz having an ofisetz portzi0n adaptzed tzo be occupied by the pin atz tzhe end of tzhe stzroke o1 tzhe lever tzo interpose a resistance tzo retzain the lever in itzs final posttion.

9. In a printing machine} tzhe combination of a platze cylinder, an oflsetz cylinder and a roller platzen, an eccentzric mountzing for the platze cylinder, a manually operable member, means connecting said member with' said eccentzric mountzing whereby tzhe member may positzicn the platze cylinder, said connectzing means including tzwo members connected by a loose play connectzion and by a spring streng enoush tzo move said means and tzurn the eccentric, mechanism connecting said manually operable member witzh the platzen, whereby tzhe manually operable member may move tzhe platzen tzo cause coactziou betzween tzhe platzen and oifset: cylinder by stzressing. tzhe spring when tzhe eccentric cannotz tzurn furtzher.

10. In a printzing machine; tzhe combinatzion cf a platze cylinder, an ofisetz cylinder and a roller platen, an eccentzric mountztng for tzhe platze cylinder, a manually operable member, means connectzing said member with said eccentzric mounting whereby the member may position the platze cylinder. said connecting means including a link having a. slot und an operating pln ca.rrled by s'aid member und occupying the slot, the p1n und link belng also cormected by a spring wh1ch 1s efiectlve to move the link when the eccentric can turn, mechanlsm cnnnecting sald manually operble member wlth the platen whereby further movement of th'e manually operable member will cause coa.ctlon between the platzen und ofl'set cylinder and in such movement will move the pln along the sl0t in the llnk, sa.ld slot having an ofiset portion adapted to be occupled by the pln at; the end o1 the stroke o1 the pln to lnterpose a. resistance 1:0 reta.in the manually operable member in its final posltion.

EDWARD J. JANEB.

REFERENCES CITED Number UNII'ED STATES PATENTS Name Date Mark Feb. 13, 1917 Wh'lte Sept. 20, 1904 Morse Aug. 7, 1934 Henderson Aug. 2, 1932 Seybold June 22, 1937 Heaton June 20, 1933 Mascord Jan. 27, 1920 Schmidt May 3, 1904 Neal Dec. 7, 1943 Sc0tt Apr. 9, 1912 Davidson Dec. 22, 1942 Parmelee Aug. 28, 1917 Neldlch Max. 3, 1914 FOREIGN PATENTS Country Date Great Brltaln Jan. 10, 1921 

